05/22/2026
Did you know a Cat C15 ACERT uses the same advanced engineering as a modern 700HP Hellcat or Mustang? 🏎️🔥Yesterday, a 700HP engine meant a radical cam, a rough lope, and zero driveability. But Caterpillar engineered a system that dynamically drops the compression ratio from 18:1 down to 15:1 by holding the intake valve open on the piston’s way up.Using a PicoScope and a Rotkee pulse sensor, we look at the intake captures at cranking vs. idling to see this muscle-car valvetrain tech in action (even on this worn-out cam!). Out of the box, it was average—but built correctly with solid mechanical physics, I can safely build this to a highly efficient, long-lasting 700HP. No cheap coatings required. Cat was the only one crazy enough to engineer this! 🙌🚛